You would need to request a SAS Software Depot from SAS which contains EG 8.4. Downloading that depot will require internet access, so you need access to another computer with internet access. Typically this is the responsibility of a SAS administrator so I suggest you contact yours if you have one. What is the reason your computer doesn't have internet access?
I am one the admins, so no problem getting a new depot, thought that the upgrade could be done by just downloading a bigger "hotfix". Security rules prevent most downloads and the execution of downloaded files.
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.